Disk attachment for drills.



0. G. RIESKE.

DISK ATTACHMENT FOR DRILLS.

APPLICATION FILED DEC. 27, 1909.

Patented .1311.23, 1912.

M fm CDLUMBIA PLANOGRAPH C0.. wASHlNGruN. D. c.

,said prior Referring to the drawings,

UNITED sTATEsrATENToEEioE.

oTTo e. RIEsKE, 0F sT'.` Ii'oUIsrA'EK, MINNESOTA, AssIGNoE TeMoNIToRDRILL CoM# rANY, or sT. LoUIs PARK, MINNESOTA, A conroEATIoN/ornIsK ,ATTAGHMENTQEOR DRILLs. A

. specification of Letters Patent".

MINNESOTA.

Patented Jan. 23,1912',

Applicatonjled December 27, 1909;*Seria1Na 534,967. i

To all whom t'tmay concern:

Be it known that I, 4OTTO citizen of the United States, Louis Park, inthe county of Hennepin and State of Minnesota,'have invented certain newand useful Improvements in Disk Attachments for Drills; land I do herebydeclare the following to be a full, clear,l and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use kthe same.

My invention has for its obj ect to provide an improved disk attachmentfor drills or seeding machines, and `is in the nature of an improvementon `lthe device disclosed' and broadly claimed inV mypendingapplication, S. N. 525,018, filed October 28th, 1,909, entitledDisk attachment for drillsl Y The invention consists of the noveldevices and combinations of devices hereinafter described and delined inthe claims.

The present application, as well as the G. 'RiEsKE, a residing :at St.

object the the disks and for ywear or diminution of the diameters of thedisks under usage.

In the accompanying drawings, whichy illustrate the invention, likecharacters indicate like parts throughout the several views.

Figure l is a view inside elevation,

broken away, showing a double disk attachment for drills embodying thefeatures ofv the present invention; Fig. 2 isa yvertical section takenapproximately4 on the line m2 m2 of Fig. l, some parts being broken awayand-some being leg member of the seed boot; and Fig. 4 is a sectionthrough4 the disks on the line m4 m4 of Fig. l, other parts beingremoved.

The disks are indicated by the numeral l and the main body or castportionof the' seed boot is indicatedy by the numeral 2. y This seedboot 2 is provided with the customary forwardly and downwardly' curvedarm,to which a coperating drag bar3 is secured in the usual or anysuitable way. Theispout 4L of the seed boot, in its preferredconstruction, is made short and it is locatediin application, has [forits `primary provision of simple and efficient means for maintaining:engagement'of the arey normally with some parts y left in full; Fig. 3isy y a detail side elevation, showing the spring front of the verticalline intersecting the projecting axes of thedisks.

lIii-lieu ofthe customary 'single ,cast leg interposed betweenY the` thedisks are usually invention provides a pair of laterally spaceddepending legs, y are. Mattached. to the seed yboot land to the lowerportions of which the vdisks vare jourf naled.y Preferably these twodepending legs are made from a single piece of approxilmately flatspringsteel fbent into approxi-A .matelyfinverted Ulshaped form with thethe upperportions of which disks and to which urnaled, the presenttransverse upper portionsvofthe same riva eteclfor otherwise rigidlysecured tothebody 2 of the seed boot,`below the spout. 4, and havingalarge central passage that registers with the treme lower shaped legmember 5 are .spaced apart by a small spacing thimble and are tiedtofvgether by; asmall nut bolt 7, passed through said thimble .andthrough the ends of the said legs, `lnfthisf way,",the lower endsof thespring legs are heldfproperly spaced but f are neverthelessY capable oftwisting or torslonakmovements. Furthermore, `as a feaf ture vof thisinvention, thelsaid spring legs kthey are put under torque, Which will Ykeep the converging edges of the disks pressed together approximately atthe point l' 1. Trunnions 8,5uponjournaled, are rigidlyv markedy on Fig.which the disks are secured fitop `the lower' end portions of theV.'springbootlegs by any -suitablemeans and, i

passage inlsaidfspout. .The eX- Q endsv of `lthe Vlegs of this U.v

given a slight twistso that#A i a spring tension or serye toautomatically y as shown', is accomplished by machine Y screw's9,although, in practice, the saidf trunnions .wouldusually be riveted tothey saidlegs. Thedisks are detachablyjourmeans `disclosed andfclaimed'in mycompanion. application,

naledto the saidtrunn-io'ns, preferably by SN; 534,966, filed off dateDec.27th, 1909, entitled Disk journais. vThis journal l constructionmay, therefore,'be here briefly described as follows: In-` ternallythreaded screw plates l() are rigidly secured.'l to the outer faces ofthe disks, and

vjournal caps l1, which tthe trunnions 8,

are screwed into the said plates 10. 'i Y'Ihe journal caps llhold inposition split or Asec-y tional lock rings l2l that `are seated andpartlyembedded in grooves formed in the 1 trunnions 8, close to theadjacent hub portions of the disks l.. In this way, the disks are heldon the trunnions with freedom for rotation.

The laterally spaced spring boot legs serve as supports for the diskjournals and as an automatic spring tension device for maintainingengagement between the converging edges of the disks, to compensate forirregularities in the surfaces of the disks and for wear of the edges ofthe disks that results in the decreasing of the diameters of said disks.Furthermore, these laterally spaced bootlegs afford an unobstructedpassage or open space between the disks and through which the seeds(usually delivered through the boot spout l by a seed delivery tube, notshown) may fall into the furrow, either in front or at the rear of theaxes of the disk journals or on the vertical line of the projecting axesof the said journals. With the spout 4 of the seed boot located in frontof the axes of the disk journals, the seeds will be dropped therefrom,and will fall freely and unguided between the laterally spaced bootlegs, and into the furrow7 at a point in front -of the disk journals.

In the specification and the claims, the term seed boot has been used ina very liberal and broad sense to include a part to which the disks areconnected by means of the laterally spaced so-called boot legs.

What I claim is: 1

1. A double disk attachment comprising a seed boot having laterallyspaced depending downwardly converging legs and converging disks locatedoutside of the said legs and journaled thereto with their convergingedges in contact.

.2. A double disk attachment, comprising a seed boot having laterallyspaced depending legs and converging disks journaled to said legs, thesaid legs being set under spring tension and having movement serving tomaintain engagement between the converging edges of the said disks andto thereby compensate for irregularities in the surfaces thereof and fordiminution of the size due to wear.

3. A double disk attachment, comprising a seed boot having laterallyspaced depending spring legs and converging disks journaled to saidlegs, the said spring legs having in themselves a normal spring tensionserving to maintain engagement between the converging edges of the saiddisks, and to thereby compensate for irregularities in the surfaces ofthe said disks and for diminution of the size due to wear.

4. A double disk attachment comprising a seed boot having laterallyspaced depending and downwardly converging legs, converging diskslocated outside of said legs and journaled to the lower portionsthereof, with their converging edges in contact, and

a seed delivery spout arranged to deliver seed between said disks, infront of the projected aXes thereof, but at the rear of the convergingedges of said disks.

5. A double disk attachment, comprising a seed boot having laterallyspaced depending legs, converging disks located outside of said legs andjournaled to the lower portions thereof, with their converging edges incontact, and with the journals of the said disks projecting outwardtherefrom, and a seed delivery spout arranged to deliver seed into thefurrow opened by said disks.

6. A double disk attachment, comprising a seed boot having a seed spoutand`a pair of laterally spaced spring boot legs depending therefrom, anda pair of converging disks journaled to the lower end portions of thesaid spring boot legs, the spring tension of which boot legs serves tomaintain engagement between the converging edges of said disks,substantially as described. v

7. A double disk attachment, comprising a seed boot, an approximatelyU-shaped spring member rigidly secured to the body of the seed boot andaffording laterally spaced spring legs depending therefrom, andconverging disks journaled to the lower portions of the said boot legs,the spring tension of said legs serving to maintain engagement betweenthe converging edges of said disks, substantially as described.

8. A double disk attachment, comprising a seed boot having a seed spout,an approximately U-shaped spring member having its bowed upper portionrigidly secured to said boot and perforated in line with the passagethrough said spout, the depending portions of said U-shaped memberaffording laterally spaced boot legs, and converging disks journaled tothe lower portions of said boot legs with the axes of their journalslocated at the rear of said seed spout, substantially as described.

9. A double disk attachment comprising a seed boot having laterallyspaced depending legs, converging disks located outside of said legs andj ournaled to the lower portion thereof, and a spout for deliveringseeds between said disks, the space between the said depending legsbeing clear and unobstructed downward from said seed delivering spout toa point materially below the projecting axes of said disks.

10. A double disk attachment comprising a seed boot having laterallyspaced depending legs and converging disks located entirely outside ofthe said legs, and journaled thereto said disks having contact at theirconverging edges, and means for delivering seeds into the furrows openedby said disks 11. A double disk attachment comprising a seed boot havinglaterally spaced depending legs and converging disks located entirelyoutside of the 'said legs and journaled 1,015,458 i Y vS3 thereto saiddisks having Contact Yat their converging edges7 anda seed deliveryspout arranged to contacting edges of said disks.

12. In a double disk attachment, a' seed hoot having laterally spaceddepending legs extending dovvnvvardlyy therefrom and condeliver theseeds between Ysaid* disks at a point in front of the projecting" i.axes of said disks but at the vrearvof the verging disks located outsideof thesaid legs i0 and rjonrnaled theretoithe said disks having contactat their converging edges. .y

In testimony Whereofl affix my signature in presence of two Witnesses.

, 4 i OTTO Gr. RIESKE. Witnesses:

MARIE E; LAPALME, HARRY D. KILGORE.

Copies of this patent may be obtained for ve cents each, by addressingther Commissioner of Patents,

' Washington, I). C.

